The hearing, which could lead to a rejection of the deal, was proposed in an order that Genachowski offered today for consideration by the full FCC, officials who declined to be identified said in a briefing with reporters. Agency staff had found the proposed merger would significantly diminish wireless competition, one official said.

The hearing would take place after the resolution of a Justice Department court challenge to the transaction, the FCC officials said. The antitrust case is scheduled for trial in February.

AT&T is “reviewing all options,” Larry Solomon, senior vice president of corporate communications, said in an e-mailed statement.

“The FCC’s action today is disappointing,” Solomon said. “It is yet another example of a government agency acting to prevent billions in new investment and the creation of many thousands of new jobs at a time when the US economy desperately needs both.”

The purchase of Bellevue, Washington-based T-Mobile would eliminate one of four national U.S. wireless carriers. AT&T has said the transaction would help it bring wireless high-speed Internet service to more people.‘Significant Obstacle’

The deal would lead to massive job losses as AT&T realizes savings, and the record at the FCC doesn’t show the merger would significantly spur the spread of wireless high-speed Internet service, an agency official said today. Wireless concentration would increase in 99 of 100 markets, the official said.

The FCC can designate a transaction for a hearing, which is akin to a trial, when it cannot find the deal is in the public interest. The administrative law judge presiding over the hearing delivers an initial decision that goes to agency commissioners for a vote. Commissioners may vote in coming days on Genachowski’s proposal.

“A hearing could go on for six to 12 months,” Andrew Lipman, a Washington-based partner with Bingham McCutchen LLP, said in an interview. “It’s certainly a significant obstacle and roadblock.”Echostar Challenge

The last time the FCC designated a media merger for a hearing was in 2002, when the agency challenged Echostar Communications Corp.’s bid for fellow satellite company DirecTV (DTV), Lipman said. The companies dropped their bid, he said.

AT&T could continue to fight the Justice Department in federal court, and if it wins there seek a settlement to stave off an appeal of the verdict and to satisfy the FCC, Christopher King and David Kaut, analysts with Stifel Nicolaus & Co., said in a note to investors today.

The federal district court judge’s decision “would likely be pivotal,” Kaut and King wrote.

AT&T has agreed to pay T-Mobile parent Deutsche Telekom AG (DTE) a breakup fee of $3 billion as well as spectrum if the deal collapses for a total package valued at as much as $7 billion.

“Too much money remains at stake for it to concede defeat and drop the deal,” Andrew Gavil, an antitrust professor at Howard University School of Law in Washington, said in an interview. “They’ve locked themselves in to take it to the mat.” Bingospy gadget